/*
 * The contents of this web application are subject to the Mozilla Public License Version 
 * 1.1 (the "License"); you may not use this web application except in compliance with 
 * the License. You may obtain a copy of the License at http://www.mozilla.org/MPL/.
 * 
 * Software distributed under the License is distributed on an "AS IS" basis, 
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License 
 * for the specific language governing rights and limitations under the License.
 * 
 * The Original Code is owned by and the Initial Developer of the Original Code is 
 * Composite A/S (Danish business reg.no. 21744409). All Rights Reserved
 * 
 * Section 11 of the License is EXPRESSLY amended to include a provision stating 
 * that any dispute, including but not limited to disputes related to the enforcement 
 * of the License, to which Composite A/S as owner of the Original Code, as Initial 
 * Developer or in any other role, becomes a part to shall be governed by Danish law 
 * and be initiated before the Copenhagen City Court ("K�benhavns Byret")            
 */

using System;
using System.IO;


namespace Composite.Core.Extensions
{
    internal static class StreamExtensionMethods
    {
        public static void CopyTo(this Stream stream, Stream toStream)
        {
            int offset = 0;
            int remaining = (int)stream.Length;
            const int chunkSize = 8192;
            
            byte[] data = new byte[chunkSize];
            while (remaining > 0)
            {
                int toRead = Math.Min(chunkSize, remaining);
                int read = stream.Read(data, 0, toRead);
                
                if (read <= 0) throw new EndOfStreamException(String.Format("End of stream reached with {0} bytes left to read", remaining));
                
                toStream.Write(data, 0, read);
                
                remaining -= read;
                
                offset += read;
            }
        }
    }
}
